Plymovent Extraction Arm Accessories FAQs
Straight answers to the questions people ask most when choosing accessories for fume extraction arms.
What accessories can I add to a fume extraction arm?
Common accessories include on/off switches, working lights, control boxes, airflow sensors, shut-off and non-return dampers, wall brackets, extension sections, extension hoses, and rail or crane systems for extra reach.
Each one solves a different problem, such as saving energy, improving visibility, balancing airflow between arms or increasing the area one arm can cover. Choose them by the problem you are trying to fix and check they are made for your type of arm.
What is the point of an automatic start and stop switch?
An automatic switch starts the fan when the arm is moved into position or when light from the weld is detected, and stops it again when the work finishes. This saves energy and noise because the fan is not running while nobody is welding.
For best results, the sensor needs to be positioned and set up as the instructions describe, otherwise it may start late or stop while welding continues.
Are manual on/off switches or automatic ones better?
Manual switches are simple, reliable and let the user decide when to extract. They suit workstations where the arm is used continuously. Automatic systems suit shared or intermittent work where fans are easily left running.
A manual system relies on people remembering to switch on, so make it habit and consider a switch fitted on the hood, where it is easy to reach.
Do I need a working light on my extraction arm?
A light is not essential, but it is a real help when preparing a weld and when working inside fixtures or under hoods, because it lights the area you are extracting from. It is common on arms used for grinding, fitting and inspection.
Lights must be rated for the voltage supplied and are often low voltage with a transformer. Replace failed lamps with the specified type.